Chaotic is a Danish trading card game brought over to the United States by Chaotic USA and 4Kids Entertainment, and distributed by TC Digital Games. It was released along with the open beta version of the online game on October 24 2007, and the card game is also featured in the animated series of the same name.

The objective of the game is fairly simple, which is to eliminate all the creatures of the opposing player.

Card Types

There are five card types

• Creature
• Attack
• Location
• Battlegear
• Mugic

Creatures

Creature cards are the cards that the players choose to make up their armies. These cards have four possible card background colors depending on what tribe they're in. They are subdivided into four different tribes, so far: Overworlders (Blue), UnderWorlders (Red), Danians (Brown), Mipedians (Yellow) and M'arrillians. Creatures have abilities that are either innate, activated, or triggered. The abilities are described in details below:

• Innate: These abilities are always in play
• Activated: These abilities are only in play when the player choses to use them. These also usually have a cost of some sort.
• Triggered: These abilities are in play once certain conditions are met.

Battlegear

Each creature on your team will be allowed to have 1 battlegear (contrary to the show, where players may equip their creatures with spectral viewers and 1 other battlegear). Each creature can only use his or her own gear, so if the creature is destroyed in battle, both the creature and the battlegear card are discarded. Battlegear is placed under your creature face down, when the creature is engaged in a battle, the gear is flipped over and revealed.

Location Deck

The player would need to build a 10-card location deck. Decks would be shuffled and placed face down. At the beginning of their turn, the player flips over the top card of their location deck. Location cards are used to determine Initiative (who attacks first in battle), either by Tribe or Discipline. If both creatures in battle are from the same Tribe or have the same score for the Discipline in question, then the attacking player has the initiative.

Attack Deck

Damage is dealt through the use of attack cards. Each player must have a 20-card attack deck, which is shuffled and placed face down. Each player will draw 2 attack cards at the beginning of the game, and always have at least 2 attack cards in their hand at all times. When it is a player's turn to "strike" they draw a third attack card and select one of the 3 attack cards to play. A player must play an attack card during each of their turns. Damage to creature is calculated by the following equation. The players then alternate striking each other creatures in a battle, starting with the creature that has the initiative. A Creature is defeated when it sustains a damage greater than or equal to its current energy.

Total Damage dealt with 1 attack card = Base Damage + Elemental Damage + Attack card Text Box Damage    
+ Creature Card Text Box Damage + Battlegear Damage (If applicable) + Location Damage (If applicable)

Mugic

The number of mugic cards the player selects is based on the number of creatures on the battle team. Mugic cards are held in the player's hand with the attack cards. Mugic cards will either be tribe associated meaning only one tribe can use them, and have the tribe color in the caption boxes, or they can be generic meaning any tribe can use them. Creatures have to have Mugic counters greater than or equal to the required cost on the Mugic card in order to use it.

Armies

Armies can be set up in one of seven different sizes: 1, 3, 6, 10, 15, 21, or 28 (although it could be bigger provided that the players have enough cards). The different sizes correspond to different degrees of difficulty. The smaller sizes (i.e 1, 3, 6) provide an "easy to play" match, suitable for novice players as there is relatively few decisions as to assign positions and battlegear to creatures, and selecting mugic cards. The larger sizes (i.e 15, 21, 28) are used for advance matches, as the players would have to decided the positions and battlegear for the large number of creatures, and the equally large number of mugic cards to be played, as well as having to decide which opposing creatures to attack. The players would then place these creatures face up in the formation of an inverted triangle (with the 'base' of the two triangles formed placed against each other).

• Movement: One must move at least one creature per turn. Creatures can move into another space on the playing mat, except to those occupied by a creature belonging to the same player. When a creature's card is moved into a space already occupied by an opponent's creature, a battle occurs. Creatures can only be moved to the spaces closest to them. Some creatures have effects on their movement or are able to attack creatures multiple spaces away.

• Bursts: Bursts occur when a player plays an attack card, mugic card, or a Creature or Battlegear's trigger abilities are activated. Once a burst has started players alternate adding to the burst with their own abilities or effects. Once both players agree to stop adding to the burst, the effects are resolved starting from the last card effect or ability down to the card that started the burst.

Other rules

• The Rule of Two: Some cards have been labeled 'unique' and only one can be in the player's deck. An example of this is a Maxxor or Chaor card.

• Variations from the original rules^[: There are very little differences between the official rules and the rules of the OCG. The OCG had a deck composed only of cards with the discipline symbols on them called the "Discipline Deck". The attacking player turns over the top card of the "Discipline Deck" to determine the type of contest between the opposing creatures. The creatures's discipline stats are enhanced or reduced by the battlegear attached, or the location. The players then draw "Power Cards" that have multiples of five printed on the cards. The players take turns to drawing power cards which reduces the stat of the selected discipline of the opposing creature. The first player to reduce the selected stat of the opponent's creature to zero is the winner of the battle. These battles continue until one player has defeated all of his or her opponent's creatures.

 Card Rarities

The rarity of cards can be found through checking the "Chaotic symbol" at the upper right hand corner of each card.

• Common: This is shown with a black Chaotic symbol
  
• Uncommon: This is shown with a green Chaotic symbol
  
• Rare: This is shown with a gold Chaotic symbol
  
• Super Rare: This is shown with a silver Chaotic symbol
  Zenith of the Hive: This is shown in silver with super written under it
• Ultra Rare: This is shown with a silver Chaotic symbol with the word "Ultra" written under it.